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Newcomb, Simon (1835-1909) astronomer
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Draft autograph letter signed to Simon Newcomb

Proper comparison of Hansen's and Delaunay's equations of Longitude, Latitude and Parallax [of the moon] much needed. Description of such comparisons as already exist. JCA's own parallax tables. Tables of Moon's Ephemeris might be obtained from Hind: JCA will enquire. Hill's computation of the perturbations of Jupiter and Saturn very worthy.

Adams, John Couch (1819-1892) astronomer

Paper

"According to Newcomb, the perturbns. of Longitude of Uranus by Neptune..."

Adams, John Couch (1819-1892) astronomer

Copy of letter to S. Newcomb

Details of forthcoming sale of Babbage's mathematical books. Death of Delaunay. Letter or extract of letter transcribed for MacAlister's biography.

Adams, John Couch (1819-1892) astronomer

Copy of letter to S. Newcomb

See copy at 37/21/1. Letter or extract of letter transcribed for MacAlister's biography. This particular copy possibly JCA's own.

Adams, John Couch (1819-1892) astronomer

Letter signed to J.C. Adams

Keen to have JCA's corrections to the sections of the Tidal Committee's report on equilibrium theoretical tidal constituents. Newcomb has been in correspondence about irregularities in earth's rotation, and periodic change of latitude in 365 days period. Wishes for JCA's opinion on Newcomb's work on irregularities in the Moon's mean motion.

Thomson, William (1824-1907) Baron Kelvin, mathematician and physicist

Notes

"I would remark that whatever weight we may be inclined to attach to the considerations which Professor Newcomb has laid before the Congress...": Prime Meridian Conference, 1884.

Adams, John Couch (1819-1892) astronomer

Autograph letter signed to J.C. Adams

Loci of planes - subsequent to JCA's work. Advice on paper of Mr. Wace. Presidency of RAS: JCA. Possible future RAS awards: Janssen, Young and Newcombe.

Proctor, Richard Anthony (1837-1888) astronomer and science writer

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